ADF4107BRUZ - 7 GHz Integer-N PLL | Analog Devices | RF
MPN: ADF4107BRUZ ✓ ActiveADF4107BRUZ Overview
An integer-N PLL is a frequency synthesizer that derives an output frequency from a stable reference using digital counters, a phase-frequency detector, a charge pump, and a feedback loop filter. In the ADF4107 architecture, a programmable dual-modulus prescaler, programmable A and B counters, a programmable reference divider, a low-noise digital phase-frequency detector, and a precision charge pump support programmable frequency generation. The 6-bit A counter and 13-bit B counter provide the programmable division and modulus functions required for integer-N channel planning.
Key characteristics include a 7.0 GHz operating bandwidth, operation with 3.3 V systems, programmable dual-modulus prescaling, programmable charge-pump current, and a separate VP charge-pump supply. A typical 1 MHz channel-spacing arrangement uses a 10 MHz reference divided by 10 by the on-chip reference divider. The manufacturer datasheet also reports typical phase noise of -83 dBc/Hz at a 1 kHz carrier offset and spurs better than -70 dBc.
The digital control interface permits programming of operating parameters, while the phase-frequency detector compares the divided reference with the feedback signal. The charge-pump output drives an external passive loop filter, and the filter, along with the selected counter values, charge-pump current, reference frequency, and prescaler modulus, determines loop bandwidth, phase noise, lock behavior, and spur performance.
Typical applications include wireless receiver local oscillators, wireless transmitter up-converters and down-converters, microwave and RF communications equipment, frequency-agile test instruments, and instrumentation requiring programmable RF synthesis. The 16-TSSOP format supports compact board construction, while the 7 GHz bandwidth covers common microwave and RF local-oscillator frequencies.
A critical design consideration is the separation of the main supply and charge-pump supply so the tuning voltage can operate beyond the normal 3.3 V rail range. Loop-filter component selection must follow the manufacturer datasheet methodology because phase noise, spurs, lock time, and reference-divider rejection are interdependent. Keep the charge-pump and feedback routing compact, provide stable reference decoupling, and use a clean low-noise reference source.
This product page combines the manufacturer specifications, package details, practical RF design guidance, application fit, and verified drop-in alternatives. It also identifies where a different PLL family should be selected when frequency range, prescaler architecture, reference-divider depth, or loop-filter requirements differ.
Drop-in alternatives for ADF4107BRUZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with ADF4107BRUZ (same form factor and footprint) — differing in Charge Pump, Package, A Counter, B Counter, Charge-Pump Supply.
ADF4107BRU
✅ Drop-InContact for price
View Datasheet →ADF4107BRUZ-REEL7
✅ Drop-In📋 Reference alternative (not in catalog)
ADF4113BRU
✅ Drop-InContact for price
View Datasheet →ADF4116BRU
✅ Drop-InContact for price
View Datasheet →ADF4107BRUZ Specifications
| Device Type | Integer-N frequency synthesizer |
| Maximum RF Input Frequency | 7.0 GHz |
| Supply Voltage Range | 2.7 V to 3.3 V |
| Nominal Supply Voltage | 3.3 V |
| Supply Current | 15 mA |
| Charge-Pump Supply | 3.3 V |
| A Counter Width | 6 bit |
| B Counter Width | 13 bit |
| Prescaler Architecture | Programmable dual-modulus prescaler |
| Typical Phase Noise | -83 dBc/Hz at 1 kHz offset |
| Typical Spurs | Better than -70 dBc |
| Reference Divider | Programmable |
| Phase Detector | Low-noise digital PFD |
| Charge Pump | Precision, programmable current |
| Package | 16-TSSOP, 0.173 in (4.40 mm) width |
| Pin Count | 16 pins |
| Mounting Type | Surface mount |
ADF4107BRUZ 16-tssop, 0.173 in (4.40 mm) width Pin Configuration Guide
Pin configuration for ADF4107BRUZ (16-tssop, 0.173 in (4.40 mm) width package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for ADF4107BRUZ.
Refer to the datasheet for full pin configuration.
Typical Applications
ADF4107BRUZ is suitable for 6 applications: Wireless Receiver Local Oscillator, Wireless Transmitter Up-Converter, Programmable RF Test Instrument, Microwave Down-Conversion Front End, Frequency Hopping Communications, RF Power Amplifier Excitation.
Wireless Receiver Local Oscillator
The ADF4107BRUZ fits wireless receiver local-oscillator generation because it synthesizes programmable RF frequencies up to 7 GHz from a stable reference. Its integer-N architecture combines a 6-bit A counter, 13-bit B counter, programmable dual-modulus prescaler, and programmable reference divider. This allows channel plans to be established without requiring a separate reference divider outside the IC. The low-noise digital phase-frequency detector, precision charge pump, and reported typical phase noise of -83 dBc/Hz at 1 kHz offset support sensitive down-conversion paths. Use a separate 3.3 V VP charge-pump supply and follow the manufacturer loop-filter methodology to maintain tuning range, lock behavior, and reference-divider rejection.
Recommended
Wireless Transmitter Up-Converter
ADF4107BRUZ can generate the programmable local-oscillator signal required by a wireless transmitter up-conversion stage. Its maximum operating frequency of 7 GHz covers many microwave communications bands, while the programmable prescaler and 6-bit A and 13-bit B counters support flexible integer-N division ratios. The 2.7 V to 3.3 V operating range supports 3.3 V systems, and the 15 mA supply current helps simplify power budgeting in compact RF hardware. The separate 3.3 V charge-pump supply allows an extended tuning voltage through the external loop filter. Validate the frequency plan against the prescaler restrictions and use the datasheet's loop-filter example as the starting point for phase-noise and spur targets.
Recommended
Programmable RF Test Instrument
The ADF4107BRUZ is useful in programmable RF test equipment that requires a compact local oscillator with digitally selectable frequencies. Its integer-N frequency plan is controlled through programmable reference, A, B, and prescaler settings, allowing one synthesizer to cover multiple test points. Operation up to 7 GHz supports microwave-oriented instrumentation, while the 15 mA current and 16-TSSOP package conserve board area. A 10 MHz reference divided by 10 can provide a 1 MHz channel-spacing basis. For accurate measurement results, prioritize reference phase noise and isolation, keep the feedback divider short, and calculate the passive loop filter for the intended measurement bandwidth rather than maximizing loop bandwidth without considering lock time.
Recommended
Microwave Down-Conversion Front End
ADF4107BRUZ can supply the local oscillator for microwave down-conversion when the desired synthesized frequency is within its 7 GHz range. The programmable dual-modulus prescaler and counter architecture allow the feedback division ratio to be changed for multiple channels, while the reference divider provides additional flexibility. The phase detector and charge pump support a conventional external passive loop filter, and the separate VP supply gives the tuning node greater voltage range than the 3.3 V main supply alone. Spurious performance must be evaluated under the final loop bandwidth because the manufacturer reports spurs better than -70 dBc for a typical implementation rather than for every possible frequency plan.
Recommended
Frequency Hopping Communications
The ADF4107BRUZ supports frequency-hopping communication systems that require rapid reprogramming of an RF local oscillator. Its programmable A and B counters, reference divider, and dual-modulus prescaler permit multiple operating frequencies to be established around a shared reference. The 7 GHz ceiling provides coverage for common RF and microwave bands, while the small 16-TSSOP package supports compact radio hardware. Hop time is determined by the programmed frequency change, reference path, prescaler, charge-pump current, and passive loop filter. Design the filter for the required lock-time and phase-noise compromise, keep programming writes synchronized with device operation, and validate settling at every channel rather than assuming performance from one frequency.
Recommended
RF Power Amplifier Excitation
ADF4107BRUZ can create a programmable excitation signal for RF power-amplifier testing or frequency-dependent measurement systems. Its frequency-synthesis functions consolidate the reference divider, programmable counters, prescaler, phase detector, and charge pump into one 16-TSSOP package, reducing the number of discrete frequency-generation blocks. The reported typical phase noise of -83 dBc/Hz at 1 kHz offset and spurs better than -70 dBc provide useful characterization points when designing the loop filter. Confirm that the amplifier's required excitation range stays below 7 GHz and within the permitted prescaler bands. Use a low-phase-noise reference and a short feedback route because reference or divider noise can dominate the final phase-noise result.
Recommended
Recommended Products Summary
Engineering reference data for ADF4107BRUZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADF4107BRU | ADF4107BRUZ-REEL7 | ADF4113BRU | ADF4116BRU |
|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 16-TSSOP (0.173 in, 4.40 mm width) | 16-TSSOP - same package family | 16-TSSOP - same package family | 16-TSSOP - same package family | 16-TSSOP - same package family |
| Ordering Difference | ADF4107BRUZ | ADF4107 ordering suffix differs | REEL7 packing suffix | Different PLL family | Different PLL family |
Key Differentiators
- Identifies the exact 7 GHz ADF4107 core function (vs ADF4107BRU)
- Production packing can be selected without changing the core electrical design (vs ADF4107BRUZ-REEL7)
- The complete 7 GHz function is established for the selected ordering code (vs ADF4113BRU)
- Separate VP supply supports extended loop-filter tuning range (vs ADF4116BRU)
Design Notes
Keep the reference input, reference-divider path, prescaler feedback, and charge-pump connection compact. These high-speed and high-impedance nodes determine reference sensitivity and phase noise. Route the feedback divider away from noisy digital and switching circuitry, use a continuous ground reference beneath the sensitive section, and place the loop-filter components close to the charge-pump and feedback pins. The manufacturer's datasheet emphasizes that the loop-filter values and system phase-noise performance depend on the frequency plan and circuit implementation.
Decouple the 3.3 V main supply and the separate 3.3 V VP charge-pump supply independently, and preserve a clean return path for the charge pump. VP provides the tuning-voltage headroom required by the external loop filter and should not be assumed to share every noise characteristic of the digital supply. Keep switching-regulator traces and inductors away from the charge-pump output and sensitive reference nodes. Confirm the final voltage ranges at the pins across temperature, supply tolerance, and output-frequency extremes.
Do not select a replacement from package appearance alone. The ADF4107BRUZ uses a 16-TSSOP package, but a related PLL can use the same package with a different RF ceiling, counter architecture, register map, reference-divider depth, or prescaler. For ADF4113BRU or ADF4116BRU, compare the pin functions and programming sequence as well as the frequency plan. The ADF4107BRU and ADF4107BRUZ-REEL7 entries represent ordering or packing choices of the core device and should be matched to production handling requirements.
Compliance Information
The available product and datasheet information does not explicitly state the requested compliance status. The part is an RF clock and frequency synthesizer rather than an automotive-qualified product identified in the available information.
